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Jai Hind Metal is a reliable manufacturer and supplier of Stainless Steel 321 / 321H Pipe Fittings, providing stainless steel piping components for industrial applications that demand corrosion resistance, structural reliability, and consistent performance at elevated temperatures. These titanium-stabilized stainless steel grades are valued for their resistance to intergranular corrosion following exposure to elevated temperatures, making them suitable for welded assemblies and high-temperature process systems. Stainless Steel 321H, with its controlled higher carbon content, is particularly suited to applications requiring improved high-temperature strength. We understand that different projects call for specific fitting types, nominal pipe sizes, schedules, wall thicknesses, connection dimensions, end preparations, surface finishes, and applicable manufacturing standards. Our Stainless Steel 321 / 321H Pipe Fittings are supplied according to customer drawings and technical specifications, with careful attention to material quality, dimensional accuracy, fitting geometry, surface condition, and overall workmanship. Depending on project requirements, the product range may include elbows, tees, reducers, caps, and other buttweld fittings in suitable configurations. Quality checks are carried out at relevant stages to verify dimensions, wall thickness, end preparation, surface appearance, and product identification before dispatch. Material test certificates, additional inspections, and third-party verification can also be coordinated when required. With organized inventory management and appropriate storage practices, Jai Hind Metal aims to support routine procurement, fabrication work, plant maintenance, and large-scale industrial projects with a dependable supply service.
Precisely manufactured metal products meeting demanding industrial standards.
Consistent quality, reliable performance, and strict inspection at every stage.
Available in customized sizes, grades, thicknesses, and specifications.
Efficient processing, secure packaging, and dependable delivery worldwide.
Stainless Steel 321 / 321H Pipe Fittings are manufactured from chromium-nickel austenitic stainless steel alloys stabilized with titanium, with Stainless Steel 321H containing a higher controlled carbon level to support improved high-temperature strength. This material composition provides a useful combination of corrosion resistance, mechanical stability, durability, and performance in elevated-temperature service conditions. Chromium helps develop a protective passive layer that resists corrosion and oxidation, while nickel contributes to toughness and structural stability. Titanium stabilization helps reduce the risk of intergranular corrosion associated with chromium carbide precipitation during exposure to elevated temperatures, particularly in welded components. Stainless Steel 321 / 321H Pipe Fittings are available in configurations such as elbows, tees, reducers, caps, and other specialized pipe fittings, with sizes, schedules, wall thicknesses, end preparations, and dimensions selected according to project requirements and applicable standards. Their combination of corrosion resistance, weldability, thermal stability, mechanical strength, resistance to intergranular corrosion, and long-term durability makes them suitable for high-temperature process piping, chemical processing equipment, petrochemical facilities, power generation systems, heat exchangers, industrial furnaces, oil and gas installations, and other engineering applications where reliable performance under demanding operating conditions is essential.
In suitable heat-treated conditions, Stainless Steel 321 / 321H Pipe Fittings provide a dependable combination of mechanical strength, corrosion resistance, weldability, and stability at elevated temperatures, making them suitable for a variety of demanding industrial environments. Their chromium-nickel composition supports resistance to oxidation and many corrosive media, while titanium stabilization helps minimize the risk of intergranular corrosion after exposure to elevated temperatures. Stainless Steel 321H, with its higher carbon content, is particularly useful in applications where improved creep resistance and high-temperature strength are important design considerations. These fittings are widely used in chemical processing plants, petrochemical facilities, power generation units, heat exchangers, industrial heating systems, oil and gas installations, refinery equipment, and high-temperature process piping. Depending on the piping design and installation requirements, available configurations may include elbows, tees, reducers, caps, and other specialized pipe fittings in different sizes, schedules, and dimensions. Stainless Steel 321 / 321H is especially valued in systems where welding, thermal exposure, and resistance to intergranular corrosion must be considered during material selection. With their combination of thermal stability, corrosion resistance, mechanical reliability, weldability, and durability, these pipe fittings can provide dependable service when the selected grade, material condition, fabrication procedures, and operating environment are appropriately matched to the application.
In suitable solution-treated and stabilized conditions, Stainless Steel 321 / 321H Pipe Fittings provide a reliable combination of mechanical strength, corrosion resistance, toughness, and performance at elevated temperatures. Their chromium-nickel composition helps the material resist oxidation and many corrosive environments, while titanium stabilization reduces susceptibility to intergranular corrosion following exposure to elevated temperatures. Stainless Steel 321H, with its higher carbon content, is particularly suitable for applications where improved high-temperature strength and creep resistance are important considerations. These fittings are commonly used in petrochemical plants, chemical processing facilities, power generation systems, refinery installations, industrial furnaces, heat exchangers, oil and gas facilities, and high-temperature process piping networks. Depending on the system design and installation requirements, components such as elbows, tees, reducers, caps, and other specialized pipe fittings can be selected in suitable sizes, schedules, and configurations. Stainless Steel 321 / 321H is valued in applications where thermal cycling, welded connections, and resistance to intergranular corrosion influence material selection. With their combination of corrosion resistance, thermal stability, mechanical strength, weldability, and long-term durability, these pipe fittings are well suited to demanding industrial systems when the material grade, heat-treatment condition, fabrication procedures, and operating parameters are carefully matched to the intended service.
Specification: | Stainless Steel 321 / 321H Pipe Fittings |
|---|---|
Type: | Butt Weld (BW), Seamless (SMLS), Welded |
Thickness: | SCH 5S, SCH 10S, SCH 20S, SCH 40S, SCH 80S, SCH 10, SCH 20, SCH 30, SCH 40, SCH 60, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, STD, XS, XXS and other customized thicknesses |
Dimensional Standards: | ASME B16.9, ASME B16.28, MSS SP-43, MSS SP-75, EN 10253, DIN, JIS and other applicable dimensional standards, depending on fitting type |
Fittings Standards: | ASME, ASTM, ANSI, MSS, DIN, EN, ISO and JIS, as applicable to the product and connection type |
ASME B16.9 Fitting Types: | 45° Elbow, 90° Elbow, 180° Return Bend, Equal Tee, Reducing Tee, Concentric Reducer, Eccentric Reducer, Pipe Cap, Cross and other compatible butt-weld fittings |
Connection Type: | Butt Weld, Socket Weld, Threaded, Flanged and other end connections, subject to fitting design and manufacturing requirements |
Pressure-Temperature Class: | Class 150, Class 300, Class 600, Class 900, Class 1500 and Class 2500, where applicable to the selected fitting type and design standard |
Schedule: | Schedule 5S to Schedule XXS, including standard, extra-strong and heavy-wall options, depending on nominal pipe size and availability |
Size Range: | NPS ½ inch to NPS 48 inches, depending on fitting type, manufacturing process and applicable standard |
Material Grade: | Stainless Steel 321 (UNS S32100) and Stainless Steel 321H (UNS S32109) |
Material Composition: | Chromium-Nickel austenitic stainless steel stabilized with titanium; Grade 321H features a higher carbon range than Grade 321 |
Applicable Material Standards: | ASTM A403 / ASME SA403 for wrought austenitic stainless steel piping fittings, with applicable material grades such as WP321 and WP321H, subject to product requirements |
Manufacturing Process: | Hot Forming, Cold Forming, Seamless Manufacturing and Welded Manufacturing, depending on fitting design and production requirements |
Surface Finish: | Pickled, Annealed, Shot Blasted, Polished and other finishes as specified by the customer |
Testing & Inspection: | Chemical Composition Analysis, Mechanical Testing, Dimensional Inspection, Visual Inspection, Hardness Testing and Non-Destructive Testing where required by the applicable specification |
Applications: | Petrochemical Plants, Oil and Gas Facilities, Heat Exchangers, Power Generation, Chemical Processing, Refineries, Thermal Processing Equipment and High-Temperature Piping Systems |
Key Features: | Good oxidation resistance, titanium stabilization, resistance to intergranular corrosion associated with sensitization, and suitability for many elevated-temperature service applications |
Available Forms: | Long Radius Elbows, Short Radius Elbows where applicable, Tees, Reducers, Caps, Crosses, Return Bends and Custom-Engineered Pipe Fittings |
Customization: | Non-standard dimensions, special wall thicknesses, project-specific material requirements and customized fittings available according to technical drawings and order specifications |
DN (Nominal Size) | SCH 10S – 90° Elbow (kg) | SCH 10S – 45° Elbow (kg) | SCH 10S – Equal Tee (kg) | SCH 40S – 90° Elbow (kg) | SCH 40S – 45° Elbow (kg) | SCH 40S – Equal Tee (kg) | SCH 80S – 90° Elbow (kg) | SCH 80S – 45° Elbow (kg) | SCH 80S – Equal Tee (kg) |
|---|---|---|---|---|---|---|---|---|---|
8 | 0.02 | 0.01 | 0.03 | 0.03 | 0.02 | 0.06 | 0.04 | 0.03 | 0.07 |
10 | 0.03 | 0.02 | 0.05 | 0.03 | 0.02 | 0.03 | 0.06 | 0.04 | 0.09 |
15 | 0.06 | 0.03 | 0.09 | 0.08 | 0.04 | 0.10 | 0.10 | 0.05 | 0.14 |
20 | 0.07 | 0.03 | 0.13 | 0.08 | 0.04 | 0.17 | 0.11 | 0.05 | 0.20 |
25 | 0.14 | 0.08 | 0.28 | 0.15 | 0.11 | 0.29 | 0.22 | 0.14 | 0.38 |
32 | 0.23 | 0.11 | 0.49 | 0.26 | 0.17 | 0.59 | 0.40 | 0.23 | 0.68 |
40 | 0.30 | 0.17 | 0.68 | 0.40 | 0.23 | 0.86 | 0.51 | 0.29 | 1.02 |
50 | 0.50 | 0.25 | 0.85 | 0.70 | 0.40 | 1.28 | 0.91 | 0.59 | 1.59 |
65 | 0.85 | 0.48 | 1.41 | 1.40 | 0.77 | 2.19 | 1.81 | 0.99 | 3.13 |
80 | 1.25 | 0.63 | 1.77 | 2.20 | 1.08 | 3.31 | 2.97 | 1.50 | 4.45 |
90 | 1.70 | 0.75 | 2.67 | 2.83 | 1.42 | 4.08 | 4.00 | 2.00 | 5.44 |
100 | 2.10 | 1.08 | 3.46 | 4.47 | 2.09 | 5.27 | 6.18 | 2.81 | 7.71 |
150 | 5.45 | 2.72 | 8.07 | 10.89 | 5.44 | 10.99 | 16.32 | 8.16 | 13.61 |
200 | 10.20 | 5.33 | 15.65 | 21.54 | 10.77 | 20.91 | 33.11 | 16.56 | 28.12 |
250 | 18.15 | 9.75 | 26.46 | 38.56 | 19.27 | 35.38 | 51.71 | 25.86 | 49.90 |
300 | 25.80 | 13.62 | 39.46 | 59.42 | 29.71 | 62.14 | 79.38 | 39.69 | 83.91 |
Element of Stainless Steel 321 / 321H Pipe Fittings | Content, % |
|---|---|
Chromium (Cr) | 17.00–19.00 |
Nickel (Ni) | 9.00–12.00 |
Carbon (C) – Grade 321 | ≤0.08 |
Carbon (C) – Grade 321H | 0.04–0.10 |
Manganese (Mn) | ≤2.00 |
Silicon (Si) | ≤1.00 |
Phosphorus (P) | ≤0.045 |
Sulfur (S) | ≤0.030 |
Titanium (Ti) – Grade 321 | 5 × (C + N) minimum; ≤0.70 |
Titanium (Ti) – Grade 321H | 4 × (C + N) minimum; ≤0.70 |
Nitrogen (N) | As specified by the applicable material standard |
Iron (Fe) | Balance |
Grade | UNS No. | Old British Standard | Euronorm / EN | W. Nr. (DIN) | GOST | Japanese JIS | AFNOR |
|---|---|---|---|---|---|---|---|
Stainless Steel 321 Pipe Fittings | S32100 | 321S31 (approx.) | X6CrNiTi18-10 | 1.4541 | 08Х18Н10Т (approx.) | SUS321 | Z6CNT18-10 (approx.) |
Stainless Steel 321H Pipe Fittings | S32109 | 321S51 (approx.) | X6CrNiTi18-10 (related designation) | 1.4878 (related high-temperature grade; verify equivalence) | Grade-specific equivalent varies | SUS321H (where specified) | Grade-specific equivalent varies |
Material | Tensile Strength | Yield Strength (0.2% Offset) | Elongation | Density | Melting Range |
|---|---|---|---|---|---|
Cast Stainless Steel 321 / 321H Pipe Fittings | Grade- and casting-standard dependent; verify specified minimum | Grade- and casting-standard dependent; verify specified minimum | Depends on casting specification and heat treatment | Approx. 7.9–8.0 g/cm³ | Approx. 1,400–1,450 °C (2,550–2,640 °F) |
Stainless Steel 321 / 321H Pipe Fittings are available in multiple configurations, including elbows, tees, reducers, caps, and other customized fitting designs, with different nominal pipe sizes, schedules, wall thicknesses, end preparations, and dimensions to accommodate diverse industrial piping layouts. These fittings are supplied according to applicable material and dimensional standards to support consistent quality, reliable mechanical properties, accurate fitting geometry, and suitable surface finish. Depending on the product type and project requirements, Stainless Steel 321 / 321H Pipe Fittings can be supplied in accordance with relevant ASTM, ASME, and other applicable international specifications, subject to the selected grade and product standard. Since these grades are titanium-stabilized and intended for applications that may involve elevated temperatures, material grade selection, chemical composition, heat-treatment condition, and fabrication requirements are important considerations for achieving the required service performance. Quality verification may include dimensional inspection, wall-thickness checks, visual examination, material identification, and review of supporting documentation to help establish product conformity and traceability. Material test certificates, additional testing, and third-party inspection can also be arranged according to agreed project requirements. These fittings are used in chemical processing plants, petrochemical facilities, refineries, power generation systems, heat exchangers, industrial heating equipment, oil and gas installations, and high-temperature process piping networks, where dependable connections, corrosion resistance, and consistent component performance are essential.






We supply Stainless Steel 321 / 321H Pipe Fittings in accordance with applicable international material and dimensional standards, including relevant ASTM, ASME, EN, DIN, and other recognized specifications, depending on the fitting type, selected grade, and intended application. Our fittings are available in various configurations, sizes, schedules, wall thicknesses, end preparations, and dimensions to meet the requirements of industrial piping systems, fabrication projects, plant maintenance, and specialized engineering applications. At Jai Hind Metal, we focus on material traceability, dimensional precision, surface quality, fitting geometry, and consistent workmanship to help ensure that supplied products conform to agreed technical specifications. We can also coordinate customized dimensions, specified tolerances, inspection and testing arrangements, material test certificates, heat-number identification, product marking, and project-specific documentation according to customer requirements. As Stainless Steel 321 and 321H differ in carbon content and certain high-temperature performance characteristics, selecting the appropriate grade and confirming the applicable product standard are important steps in meeting the intended service conditions. For product details, technical specifications, availability, quotations, or customized requirements, email us at info@jaihindmetal.com.
Stainless Steel 321 / 321H Pipe Fittings are widely used in industrial piping systems where corrosion resistance, thermal stability, mechanical strength, and reliable performance at elevated temperatures are essential. Their chromium-nickel composition, combined with titanium stabilization, helps protect against oxidation and reduces susceptibility to intergranular corrosion following exposure to elevated temperatures. Stainless Steel 321H, with its higher carbon content, is particularly useful in applications requiring improved high-temperature strength and creep resistance under suitable operating conditions. These fittings are commonly used in chemical processing plants, petrochemical facilities, oil refineries, power generation units, heat exchangers, industrial furnaces, oil and gas installations, and high-temperature process equipment. Different configurations, including elbows, tees, reducers, caps, and customized pipe fittings, help accommodate varying piping layouts, connection requirements, and installation specifications. Stainless Steel 321 / 321H is especially valued in systems where thermal exposure, welded connections, and resistance to intergranular corrosion are important factors in material selection. With their combination of corrosion resistance, thermal stability, mechanical reliability, weldability, and durability, these pipe fittings offer a practical solution for demanding industrial applications when the selected grade, fabrication method, and operating conditions are appropriately matched to the intended service.
Looking for high-quality industrial products manufactured to your specific requirements? Contact our team for product details, customized solutions, pricing, and timely delivery.
Email: info@jaihindmetal.com
Our high-performance metal products are engineered to meet the demanding requirements of industries operating in challenging environments, including extreme temperatures, pressure and corrosive conditions.
Our corrosion-resistant metal products are widely used in marine environments where exposure to seawater, salt spray and harsh atmospheric conditions demands exceptional durability and reliability.
Our nickel alloys and high-performance metal products are used throughout the oil and gas industry for demanding applications involving high pressure, corrosive fluids, sour gas and extreme operating conditions.
Our corrosion-resistant alloys provide dependable performance in chemical processing equipment exposed to aggressive chemicals, high temperatures and challenging process conditions.
High-strength nickel alloys and specialty metals are selected for aerospace applications where lightweight performance, strength and resistance to extreme temperatures are essential.
Our specialty metal products support power generation equipment operating under high temperatures, pressure and corrosive conditions, delivering reliable long-term performance.
Corrosion-resistant metals are ideal for salt production environments where continuous exposure to concentrated salt and moisture can severely affect conventional materials.
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